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Home DTC Codes P0806 Medium · 30-60min
P0806 Critical

OBD2 code P0806: Transmission - Gear/clutch selection

Gear or clutch selection fault.

ECU: TCM

Detected Root Component

Powertrain Component

Confidence level: low

Observed Symptoms

  • Hard or abrupt gear shifting
  • Transmission stuck in one gear
  • Transmission slippage

Possible Causes

  • Faulty solenoid valve
  • Faulty transmission speed sensor
  • Damaged transmission harness
  • Faulty TCM computer
Diagnostic Progress 0 %
Difficulty Medium
Est. time 30-60min
Tools Required 5 tool(s)

Tools Required

multimeter OBD scanner wiring diagram back-probe pins oscilloscope (optional)

Interactive Diagnostic

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Diagnostic Result

0
certainty points

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Parts likely to be the cause (Moteur (général))

Moteur (général)

Moteur (général)

Photo d'illustration : Moteur (général)

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Frequently asked questions about code P0806

What does code P0806 mean?

OBD2 code P0806: Transmission - Gear/clutch selection. Gear or clutch selection fault.

What are the symptoms of code P0806?

Code P0806 may cause: Hard or abrupt gear shifting, Transmission stuck in one gear, Transmission slippage. The intensity of these symptoms varies depending on the vehicle and driving conditions.

What causes code P0806?

The most common causes of code P0806 are: Faulty solenoid valve, Faulty transmission speed sensor, Damaged transmission harness, Faulty TCM computer. A proper OBD2 diagnostic will pinpoint the exact cause.

Is it serious to drive with code P0806?

Yes, code P0806 is critical (Critical). Avoid driving and consult a professional promptly to prevent major damage.

How do I fix code P0806?

Start by reading the code with an OBD2 scanner, then follow the interactive decision tree on this page. Priority causes to check: Faulty solenoid valve, Faulty transmission speed sensor, Damaged transmission harness, Faulty TCM computer. Difficulty: Medium · Estimated time: 30-60min.